CH597898A5 - - Google Patents

Info

Publication number
CH597898A5
CH597898A5 CH1025975A CH1025975A CH597898A5 CH 597898 A5 CH597898 A5 CH 597898A5 CH 1025975 A CH1025975 A CH 1025975A CH 1025975 A CH1025975 A CH 1025975A CH 597898 A5 CH597898 A5 CH 597898A5
Authority
CH
Switzerland
Application number
CH1025975A
Inventor
Rostislav Nebolsine
Original Assignee
Hydrotechnic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hydrotechnic Corp filed Critical Hydrotechnic Corp
Publication of CH597898A5 publication Critical patent/CH597898A5/xx

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/14—Downward filtration, the container having distribution or collection headers or pervious conduits

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
CH1025975A 1974-10-25 1975-08-06 CH597898A5 (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/517,862 US3954620A (en) 1974-10-25 1974-10-25 Filtration and backwashing apparatus for use with a water filtration system

Publications (1)

Publication Number Publication Date
CH597898A5 true CH597898A5 (ro) 1978-04-14

Family

ID=24061525

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1025975A CH597898A5 (ro) 1974-10-25 1975-08-06

Country Status (3)

Country Link
US (1) US3954620A (ro)
CH (1) CH597898A5 (ro)
NL (1) NL7507736A (ro)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4200536A (en) * 1978-08-22 1980-04-29 Samuel Kaufman Underdrain for filter tanks
FR2450626A1 (fr) * 1979-03-06 1980-10-03 Degremont Filtre a lits superposes de materiaux granulaires
US4579659A (en) * 1983-11-03 1986-04-01 Indreco U.S.A., Ltd. Filter nozzle
GB8808133D0 (en) * 1988-04-07 1988-05-11 Paterson Candy Int Granular media filters
US5149427A (en) * 1991-04-03 1992-09-22 The F.B. Leopold Company, Inc. Cap for underdrains in gravity filters
US5089147A (en) * 1991-05-01 1992-02-18 Zimpro Passavant Environmental Systems, Inc. Underdrain for granular medium filter
ES2084976T3 (es) * 1991-06-07 1996-05-16 Sulzer Chemtech Ag Reactor de lecho estacionario para la depuracion biologica de aguas residuales.
US5160614A (en) * 1992-02-25 1992-11-03 The F.B. Leopold Company, Inc. Air duct block for air/water underdrain systems in gravity filters
US5693219A (en) * 1996-01-31 1997-12-02 Beauchamp; William J. Apparatus for backwashing a water filter
GB2408001B (en) * 2001-10-18 2006-03-29 Derek Colin Tolley Filtration of liquid media
BRPI0610670B1 (pt) * 2005-04-11 2016-01-19 Shell Int Research método para produzir um produto bruto, catalisador para produzir um produto bruto, e, método para fabricar um catalisador
US20090134101A1 (en) * 2007-05-03 2009-05-28 Dae Sung Lee Filtration system
JP5201481B2 (ja) * 2008-06-19 2013-06-05 株式会社ナガオカ 水処理装置および水処理装置濾材層の洗浄方法
JP5845535B2 (ja) * 2011-07-25 2016-01-20 株式会社ナガオカ 水処理装置の上層洗浄装置および水処理装置濾材層の洗浄方法
GB201301028D0 (en) * 2012-12-04 2013-03-06 Enhydra Ltd Filtration arrangement and method
CN103657173A (zh) * 2013-12-12 2014-03-26 王强 一种均质重质粗滤料上向流过滤装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1572398A (en) * 1924-05-12 1926-02-09 Frederick B Leopold Filtering apparatus
US1871122A (en) * 1928-12-27 1932-08-09 Kretzschmar Alfred Filter for liquids
US2453345A (en) * 1945-06-28 1948-11-09 American Viscose Corp Filtering apparatus
US3493116A (en) * 1969-02-10 1970-02-03 Swimrite Mfg Co Inc Swimming pool filter

Also Published As

Publication number Publication date
NL7507736A (nl) 1976-04-27
US3954620A (en) 1976-05-04

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Legal Events

Date Code Title Description
PL Patent ceased